Photographer's Note

Walking from the O2 Arena to North Greenwich Pier after sunset, this is the show you get.
The lights constantly change their color, and it took a few attempts to capture the combination I liked and at the same a single person appearing at the end of the tunnel!

No, I didn't add any saturation: I only removed some noise (I had to shoot at 2000 ISO, as I had no tripod). What you see are the actual lights :)